The FX400 System uses the Power Plus I Pressure Plate with a Ceramic disc. This s the ultimate, extreme-duty street, or road/drag racing system. It is built using a special 4-wing Ceramic Button design disc for long life, outstanding holding capacity and high heat dissipation. SFI Approved for most race applications.*Warning:* The Ceramic disc engages very quickly and may chatter slightly upon starting from a stop.